Sorry if this has already been asked.

The huge array of vitamins in stores can make you dizzy, am wondering if anyone knows which brands are best?

I'm female...and looking for a good multi, GNC has various kinds so not sure which to get. Is GNC a reputable brand?

I already buy NOW vitamins, C (1000) D3 (1000) and E (400) am only taking 1000 of the Vit D3, is that enough?

I also take Magnesium.

Have just started throwing in fish oil but don't know how much of that I should be taking.

Do not take any of the B's and have been reading a thread about how useful that is?

Thank you in advance fro any advice